Phat Trien Cong Nghe Viettech Viet Nam Joint Stock Company Address: No 5, 91/6, Nguyen Van Troi Street, Phuong Liet Ward, Thanh Xuan District, Ha Noi City Enterprise code: 0106499357 Phone: 02436686558 Representative: Nguyen Van Kien Adress: No 16, Tran Dien Street, Khuong Mai Ward, Thanh Xuan District, Ha Noi City Phuong Liet Ward, Thanh Xuan District, Ha Noi CityFounding date: 1 - 4 - 2014